# US 7,612,204 B2 · Quinoxaline derivative, and light-emitting element and light-emitting device using quinoxaline derivative

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- Number: US 7,612,204 B2
- Document ID: US7612204B2
- Status: Granted
- Kind: B2
- Application number: 11/866,179
- Filed: 2007-10-02
- Published: 2008-04-17
- Granted: 2009-11-03
- Earliest claimed: 2006-10-06
- Assignees: Semiconductor Energy Laboratory Co., Ltd.
- Inventors: Masakazu Egawa; Atsushi Tokuda
- Web page: https://patentgrep.com/patent/US7612204B2

## CPC

- C07D 241/42: with only hydrogen atoms, hydrocarbon or substituted hydrocarbon radicals, directly attached to carbon atoms of the hetero ring
- C09K 11/06: containing organic luminescent materials
- H05B 33/14: characterised by the chemical or physical composition or the arrangement of the electroluminescent material {, or by the simultaneous addition of the electroluminescent material in or onto the light source}
- H10K 85/626: {containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene}
- H10K 85/6572: {comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole}
- C09K 2211/1007: Non-condensed systems
- C09K 2211/1011: Condensed systems
- C09K 2211/1044: containing two nitrogen atoms as heteroatoms
- H10K 50/11: characterised by the electroluminescent [EL] layers
- H10K 50/125: specially adapted for multicolour light emission, e.g. for emitting white light
- H10K 85/324: {comprising aluminium, e.g. Alq3}
- Y02B 20/00: Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- C07D: HETEROCYCLIC COMPOUNDS (macromolecular compounds C08)
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- H05B: ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02B: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS

## Abstract

An object is to provide a novel organic compound capable of visible light emission. In particular, an object is to provide a novel organic compound that exhibits a broad emission spectrum when it is used for a light-emitting element. In addition, an object is to provide a light-emitting element and a light-emitting device that gives white light emission with an excellent color rendering property. The quinoxaline derivative represented by General Formula (1) is provided. Since the quinoxaline derivative represented by General Formula (1) is capable of emitting visible light, it can be favorably used for a light-emitting element. In particular, since the quinoxaline derivative represented by General Formula (1) exhibits a broad emission spectrum when it is used for a light-emitting element, by using it for a light-emitting element a light-emitting element that gives white light emission with an excellent color rendering property can be obtained.

## Claims

### Claim 1

A compound represented by Formula (7)

### Claim 2

A compound represented by Structural Formula (126)

### Claim 3

A compound represented by Formula (9)
wherein R16 to R18 are the same or different from each other, and each represent any of a hydrogen atom or an alkyl group with 1 to 4 carbon atoms.

### Claim 4

A compound represented by Formula (10)

### Claim 5

A compound represented by Structural Formula (144)